[MENTION=443587]ExPatTyke[/MENTION], cool bike.
I appreciate the responses. As said, Speedplay is on my list for the reasons others have said they like them. I really like the idea of dual-sided functionality. There's a good amount of adjustability. Nice and light, too.
Walkability isn't really a huge issue in this case. With my other bikes I just wear old soccer-style sneakers that work well with the clips and straps.
My second choice is the Look system. I like the idea of a wide platform (wide feet). I really like the way they look, and the color options.
Last night I found a pair of Speedplays for sale cheap, so I might very well end up with those.